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參數(shù)資料
| 型號(hào)： | DS1744-70+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC RAM Y2K 5V 70NS 28-EDIP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 12 |
| 類型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 閏年，NVSRAM，Y2K |
| 存儲(chǔ)容量： | 32KB |
| 時(shí)間格式： | HH:MM:SS（24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | 并聯(lián) |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 28-DIP 模塊（0.600"，15.24mm） |
| 供應(yīng)商設(shè)備封裝： | 28-EDIP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1434 (CN2011-ZH PDF) |
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
8 of 16
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground
5.5V Version…………………………..………………………………..…………………………...-0.3V to +6.0V
3.3V Version………………………………………………………………………………………...-0.3V to +4.6V
Storage Temperature Range
EDIP..........................……………………..………………………………………………………...-40°C to +85°C
PowerCap..................……………………..……………………………………………………….-55°C to +125°C
Lead Temperature (soldering, 10s)……….................................................................………………………………..+260°C
Note: EDIP is hand or wave-soldered only.
Soldering Temperature (reflow, PowerCap).................................................................................................................+260°C
This is a stress rating only and functional operation of the device at these or any other condition beyond those indicated in the operation sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time can affect reliability.
OPERATING RANGE
RANGE
TEMP RANGE
VCC
Commercial
0°C to +70°C, Noncondensing
3.3V ±10% or 5V±10%
Industrial
-40°C to +85°C, Noncondesnsing
3.3V ±10% or 5V±10%
RECOMMENDED DC OPERATING CONDITIONS
(TA = Over the operating range)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS NOTES
Logic 1 Voltage (All Inputs)
VCC = 5V ±10%
VCC = 3.3V ±10%
VIH
2.2
VCC + 0.3V
V
1
VIH
2.0
VCC + 0.3V
V
1
Logic 0 Voltage (All Inputs)
VCC = 5V ±10%
VCC = 3.3V ±10%
VIL
-0.3
0.8
V
1
VIL
-0.3
0.6
V
1
DC ELECTRICAL CHARACTERISTICS
(VCC = 5.0V ±10%, TA = Over the operating range.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS NOTES
Active Supply Current
ICC
75
mA
2, 3, 10
TTL Standby Current
( CE = VIH)
ICC1
6
mA
2, 3
CMOS Standby Current
( CE ≥ VCC - 0.2V)
Icc2
4
mA
2, 3
Input Leakage Current (Any
Input)
IIL
-1
+1
A
Output Leakage Current
(Any Output)
IOL
-1
+1
A
Output Logic 1 Voltage
(IOUT = -1.0mA)
VOH
2.4
1
Output Logic 0 Voltage
(IOUT = +2.1mA)
VOL
0.4
1
Write Protection Voltage
VPF
4.25
4.50
V
1
Battery Switchover Voltage
VSO
VBAT
1, 4
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